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lots of backfire and hard shifting.

2924 Views 8 Replies 5 Participants Last post by  dan330

I have a 1994 Intruder 1400. It has Cobra straight pipes and jets which were put on by last owner. It sounds great and pull very strong and gets about 45 mpg.

But it pops or backfires a lot. Not sure which Pops or backfires: What is the difference? How can you tell by the sound?
This happens mostly as I slow down. In top gear (4th), it happens a lot when I slow form high speeds (70 mph) but will do it at other times too.

Not sure if this is normal for a bike with these mods. It does sound like are a Harley. 8)

The other thing is the shifting. It is very loud. Just seams like it might be hurting some cogs. It is more so into 2nd and 1st from higher mphs. I am not engaging the clutch, just shifting to find what gear I am in.

Oh, 1 more question...
The rear shocks needs to be adjusted. The last owner must have them on very stiff. It is very hard over bumps and jars my jaw!
Which direction do I twist the adjusters on the shocks?
Do the twist in different directions? Left and right shocks?
How many levels of adjustments are there?

Thanks everyone in advance... :D :D :D
1 - 1 of 9 Posts
No, dont listen to that nonsense. "Maps", and the abbreviation "EFI" apply to fuel injected bikes. Your bike, on the other hand is carbureated...Quite different. That popping is a result of a rich condition when decelerating. You can try leaning out your mixture screws a bit. Sometimes it helps, otherwise check that your choke is properly operating. Anyways this backfiring is not auctually harmful, its common with bikes wearing aftermarket pipes to pop a bit.

As for your trans...Intruders have an uncanny ability to magically induce air into the hydraulic systems, specifically the handlebar mounted masters. The extreme angle might have something to do with it. A hydraulic clutch with some air in the lines can have symptoms like hard shifting and an elusive neutral.
1 - 1 of 9 Posts
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